多源遥感数据空间叠合找矿效果研究——以内蒙古西部朱拉扎嘎金矿为例

以内蒙西部朱拉扎嘎金矿为例，利用航空遥感ETM^＋数据和ASTER数据分别提取褐铁矿化蚀变异常，将提取结果与地质特征、地球化学特征对比分析，分析结果显示，两种数据源分别提取的异常分布范围不完全一致，但在朱拉扎嘎金矿区都有异常显示。野外验证，矿区普遍发育褐铁矿化蚀变。因此推断，在同一地区，利用ETM^＋数据和ASTER数据分别提取蚀变异常，异常同时出现的地区（叠合区）找矿的可能性大。

Effect Analysis on the Polygenietic Remote Sensing Data Superimposed Prospecting Taking Zhulazhaga gold mine in western Neimenggu as the example

The Zhulazhaga gold mine in the western Neimonggu was taken as the example, by use the airborne remote sensing ETM data and ASTER data, the limonite mineralization alteration abnormality were extracted. It compared and analyzed the extracted results and geologic characteristic, geochemical characteristic, the result shows the abnormality distribution scale extracted from two data sources are different, but they both have abnormality discovered in the Zhulazhaga gold mine. The filed prospecting tested the ore district has limonite mineralization alteration abnormality universally. So it can indicate that in the same area, extract al- teration abnormality separately by use ETM data and ASTER data, it＇ s more possible to prospecting in the area where the abnormality appears in the same time.